//
//  StatusCell.swift
//  Weibo
//
//  Created by apple on 15/12/18.
//  Copyright © 2015年 itcast. All rights reserved.
//

import UIKit
import SnapKit
//cell = 顶部视图 + 转发微博视图 + 底部视图
class StatusCell: UITableViewCell {

    var bottomViewTopConstraints: Constraint?
    //定义微博模型属性
    var status: Status? {
        didSet {
            //给顶部视图 设置模型数据
            topView.status = status
            //设置转发微博的数据模型

            
            //卸载掉顶部约束
            bottomViewTopConstraints?.uninstall()
            //需要根据树模型 提供的数据 判断是否显示转发微博视图
            if let retweetedStatus = status?.retweeted_status {
                //一定是转发微博
                //1.修改约束 
                bottomView.snp_updateConstraints(closure: { (make) -> Void in
                   self.bottomViewTopConstraints = make.top.equalTo(retweetedView.snp_bottom).constraint
                })
                
                //设置转发微博的数据源
                retweetedView.retweetedStatus = retweetedStatus
                //显示转发微博
                retweetedView.hidden = false
                
            } else {
                //一定原创微博
                bottomView.snp_updateConstraints(closure: { (make) -> Void in
                    self.bottomViewTopConstraints = make.top.equalTo(topView.snp_bottom).constraint
                })
                //隐藏转发微博视图
                retweetedView.hidden = true
            }
        }
    }
    
    //cell 入口
    override init(style: UITableViewCellStyle, reuseIdentifier: String?) {
        super.init(style: style, reuseIdentifier: reuseIdentifier)
        setupUI()
        //设置cell选中的样式
        selectionStyle = .None
    }

    required init?(coder aDecoder: NSCoder) {
        fatalError("init(coder:) has not been implemented")
    }
    
    //自定义cell
    private func setupUI() {
        //使用contentView   添加子视图
        contentView.addSubview(topView)
        contentView.addSubview(bottomView)
        contentView.addSubview(retweetedView)
        //设置约束 
        topView.snp_makeConstraints { (make) -> Void in
//            make.top.equalTo(contentView.snp_top)
//            make.left.equalTo(contentView.snp_left)
//            make.right.equalTo(contentView.snp_right)
            make.top.left.right.equalTo(contentView)
            //设置高度 ,便于测试
//            make.height.equalTo(50)
        }
        
        //设置转发微博的约束
        retweetedView.snp_makeConstraints { (make) -> Void in
            make.left.right.equalTo(contentView)
            make.top.equalTo(topView.snp_bottom)
            //便于前期调试
//            make.height.equalTo(50)
        }
        
        bottomView.snp_makeConstraints { (make) -> Void in
            make.left.right.equalTo(self)
            self.bottomViewTopConstraints = make.top.equalTo(retweetedView.snp_bottom).constraint
            make.height.equalTo(40)
            
        }
        
        
        //给contentView设置约束  非常关键的一点
        contentView.snp_makeConstraints { (make) -> Void in
            make.top.left.right.equalTo(self)
            make.bottom.equalTo(bottomView.snp_bottom)
        }
    }
    
    
    // 懒加载子视图
    //顶部视图
    private lazy var topView: StatusCellTopView = StatusCellTopView()
    
    //转发微博
    private lazy var retweetedView: StatusRetweetedView = StatusRetweetedView()
    
    //底部视图
    private lazy var bottomView: StatusCellBottomView = StatusCellBottomView()
    
}
